In my case, I was just talking to someone. However, a gal, who just so happens to work at my company now, was a bit more embarrassed as she was caught on speaker making out with the real sound guy. It was just a rehearsal but I bring the story out of my back pocket every now and then if she decides to pick on me.

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With great power comes Awesome irresponsibility.

So I guess I'm researching on my own. Sounds like in pro audio, xlr is more for line input (vocals, instruments, etc. ) So it can be used for powered subs to send the signal to the amp in the sub, but can't be used to send powered signal from amp to passive sub. Sounds like possibly 1/4 phono cable can work, still trying to figure that out.